A fascinating, two-day seminar at which the speakers are: Professor Sir Arnold Wolfendale FRS, 14th Astronomer Royal; Dr Nils Johansen, from the University of Oslo; Dr Diana Collecott, formerly at the University of Durham; Diana Hitchins, expert on scientific instrument makers; John Dixon, direct descendent of the Dixon family; also guided visits to Kiplin Hall and Cockfield Fell. Full details on The Bowes Museum website. Tickets: £100.00 per person.